![](http://humble.audio/cdn/shop/files/HA_Quad_Operator_{width}x.jpg?v=1614310370)
Quad Operator
US$ 500
4 Variable Waveshape Operators for Linear FM Synthesis
With an implementation completely from scratch, the Quad Operator is able to provide a modern take on frequency modulation synthesis.
* One knob per function design for true ease of use
* Any FM algorithm is possible via modulation matrix
* Each operator can also be unlocked and patched independently with convincing digital emulation of classic analog waveshapes
* An LFO mode, enabled the generation of phase locked, complex modulation signals
Eurorack format, 30hp
Quad Operator Love
Algo expander
US$ 85
Expander for Quad Operator’s Algorithm Functionality
Where the unexpanded Quad Operator maintains a one knob per function design discipline, we nevertheless recognized the value of some more advanced algorithm-oriented functionality. The Algo provides:
* Saving and loading of modulation send knob positions for FM algorithm design reuse
* Crossfade between pairs of saved algorithms, or a saved algorithm and the live knob positions
Eurorack format, 4hp
![](http://humble.audio/cdn/shop/files/HA_Algo_solo_{width}x.jpg?v=1614310402)